baber/WOPTO huggingface dataset:
Patent GB-1533901-A (GB)
Title: Brake assemblies
IPC: F16D65/092
Filed: 1976-08-23
Abstract: 1533901 Backing plates for brake friction members SOC ANON FRANCAISE DU FERODO 23 Aug 1976 [12 Sept 1975] 35045/76 Heading F2E In a brake having friction linings secured to a metal backing plate consisting of a stack of metal sheets, the sheets are held in face-to-face contact by localized connecting means 20 or 20<1> at least some of which are located in the zone of the backing plate acted on by the brake operating means. In Figs. 1 and 2 all of the connecting means 20 are located in the annular zone A acted on by piston 15 while in Fig. 4 they are located in a W-shaped zone A<1>. In Figs. 5 and 6 (not shown) there are two rectangular zones, the brake being of the internal/external drum type. The connecting means may comprise spot-welds, crimping or riveting.
Patent GB-1268390-A (GB)
Title: Improvements in or relating to photographic silver halide materials and compositions
Inventor: BEN-EZRA AARON
IPC: G03C1/06
Filed: 1969-07-11
Abstract: 1,268,390. Photographic silver halide materials. GAF CORP. July 11, 1969 [July 17, 1968], No.35098/69. Heading G2C. Photographic silver halide materials contain in the emulsion layer or a subbing or overcoating layer contiguous thereto 2 to 20g of a watersoluble cadmium salt and 2 to 20g of a watersoluble zinc salt per kilogram of emulsion. The salts may be chlorides, bromides, sulphates or acetates, and may be added in the coating finals or earlier or to the emulsion layer after coating on the film support. Improved gradation, gradational stability and fog are obtained.
Patent GB-1375571-A (GB)
IPC: B24D5/06
Filed: 1971-07-27
Abstract: 1375571 Abrasive tools D H PROWSE & CO Ltd 11 July 1972 [27 July 1971] 35103/71 Heading B3D [Also in Division C4] An abrasive article comprises a sheet of abrasive-carrying material embedded in a backing material in a manner such that spaced portions only of the carrying material are exposed from the backing material on a surface of the article and having abrasive particles secured only to these exposed portions. The carrying material is preferably in sheet form having a discontinuous surface and may be flat or bent, for example into a tube or cylinder which is combined with the backing material. It may be metallic or non-metallic, flexible or rigid, perforated or imperforate, such as mesh or screen structures and expanded sheets. The backing may be flexible or rigid and may comprises a synthetic plastics or natural rubber. If the abrasive particles are to be electroplated to the carrying material, the backing should be non-conductive. Suitable materials are polypropylene, acrylonitrile-butadiene styrene, styrene-acrylonitrile, nylon or fibre glass. A sheet of carrying material may be embedded in the backing member by extrusion or pressing, or the sheet may be coated with carrier by spraying or dipping, or they may be simply adhered. The surface of the article may require machining to expose the carrying material. Suitable abrasive particles are of diamond (natural or synthetic); cubic boron nitride, tungsten carbide, glass or sand.
Patent GB-1355118-A (GB)
Title: Circuit arrangement for producing a calibratable datum line in an intensity-modulated display device
IPC: G01R13/30
Filed: 1971-07-27
Abstract: 1355118 Cathode-ray tube displays WANDEL U GOLTERMANN 27 July 1971 [22 Oct 1970] 35190/71 Heading H4T In an arrangement for producing a display of a waveform to be observed and two calibratable datum lines by intensity modulation of the beam of a cathode-ray tube 1 (Fig. 1) which is scanned in the X direction by a sawtooth wave generator 2 and in the Y direction by a sinusoidal wave generator 4 the intensity modulation being produced by the outputs of comparators 9, 10 and 11 having as one input respectively the waveform to be observed from terminal 13 and reference voltages determining the datum lines from potentiometers 16 and 17 and as a common second input a quantity Áy proportional to the Y deflection waveform, variation of the scale of the display and the position of the zero of the displayed image is effected by variation of the Áy quantity in device 12 which includes an adjustable divider and an adjustable amplifier. For measurement and calibration purposes a switch 14 allows the actual values to be read on a meter 15. In a second embodiment (Fig. 2) in which elements 21 to 37 are similar to elements 1 to 27 of Fig. 1; (a) the battery 18 of Fig. 1 is replaced by a peak-to-peak rectifier 38 supplied with the Áy waveform so that the datum lines are always  within the visible area of the screen; (b) switch 14 of Fig. 1, is formed with three gangs 34a, 34b, 34c, the latter gang, in the first two positions employed when the reference voltage input to comparators 30, 31 is being read on meter 35, supplying a fixed D.C. voltage from battery 43 to a control input of these comparators which acts to increase the duration of the output of monostables which form the output circuits of the comparators so that the datum line being calibrated looks brighter than the other lines and (c) a constant-gain low offset-voltage amplifier 44 and a step adjustable attenuator 45 are included in the input of the voltage to be observed from terminal 33, the amplifier 44 ensuring that the comparators are not under driven in such a way that variations in their input characteristics disturb their accuracy and to enable the display to be calibrated by observing meter 35 the attenuation introduced by attenuator 45 is offset by an adjustable step amplifier 46 and the amplification introduced by amplifier 44 is offset by a constant attenuator 47 or by omitting the latter and allowing for it in the amplification provided by amplifier 46.
Patent GB-469643-A (GB)
Title: Improvements in striker plate for door latch bolts
IPC: E05B15/02
Filed: 1936-12-23
Abstract: 469,643. Striking-plates for latches. McKINNEY, C. J., and REID, J. S. Dec. 23, 1936, No. 35247. [Class 44] The striking - plate for the latch bolt 2 of an automobile door 1 has a body portion 9 of yieldable material such as rubber with a thin face plate 10 of metal or other wearresisting material. The plate has a main shoulder 6 and a safety shoulder 7, and a metal strip 12 embedded in the yielding body 9 serves as an abutment for the heads of the screws 13 which secure the plate to the door frame 3. A plate 15 is welded to the inside of the door frame 3 to receive the ends of,the screws 13. The end portions 24 of the face plate 10 are bent beneath. the body portion 9, and a yielding member 25 is mounted between the plate and the door frame.
Patent GB-428801-A (GB)
Title: Improvements in paper or like sheet supports for use in stencilling and other purposes
IPC: B65H1/04
Filed: 1933-12-15
Abstract: 428,801. Drawing - boards; filing papers. ECONASIGN CO., Ltd., and READ, T., 92, Victoria Street, London. Dec. 15, 1933, No. 35328. [Classes 11 and 146 (i)] [See also Group XVI] A paper or like sheet support for use in stencilling and similar purposes requiring the use of a plate of a particular outline comprises a board a hinged at its lower or front edge to a frame b and supported by springs s arranged to press the board against a fixed stop c along the front edge of which is a rabbet or groove c<1> or an equivalent metal strip c<2> of angular crosssection to assist in guiding or positioning the stencils or design plates. A sheet laid on the board a is clamped against the stop c, which is in the form of a cross-bar connecting the sides of the frame and is held there during a stencilling &c. operation ; a ball catch d fitted in each side edge of the board assists in holding the board in raised position.
Patent GB-1440728-A (GB)
Title: Stabilized cadmium pigments
IPC: C09C1/10
Filed: 1974-08-12
Abstract: 1440728 Stabilized cadmium pigments BAYER AG 12 Aug 1974 [18 Aug 1973] 35400/74 Heading C1A [Also in Divisions C4 and C3] A stabilized cadmium pigment comprising cadmium sulphide, the lattice of the cadmium sulphide optionally containing zinc and/or selenium, which pigment is coated with one or more precipitates insoluble in an aqueous medium of silica, a colourless phosphate having divalent and/or higher-valent metal cations, a colourless silicate having divalent and/or highervalent metal cations, or any mixture thereof may be produced by forming a suspension of the pigment in water having dissolved therein a phosphate or silicate, adding to the solution at least one salt of a divalent or higher-valent metal or an acid to precipitate as a coating on the pigment the colourless phosphate, the colourless silicate or silica, separating the water from the pigment and drying the thus stabilized pigment. In the examples aqueous suspension of cadmium yellow pigment (CdS and (Cd 0À64  Zn 0À36 )S) and cadmium orange pigment ((Cd, Se)S) are treated with waterglass solution, a solution containing CaCl 2  and AlCl 3 , HCl, solutions of Na 2 HPO 4  and Al 2 (SO 4 ) 3 , NaOH, MgSO 4  and ZnSO 4 . The treated pigments are filtered off, washed, dried and ground.
Patent GB-1445673-A (GB)
Title: Fixing device
IPC: E04B9/18
Filed: 1974-08-12
Abstract: 1445673 Anchor bolts A FISCHER 12 Aug 1974 [30 Aug 1973] 35424/74 Addition to 1443606 Heading F2H [Also in Division E1] In a fixing device as described in the parent Specification the support member is formed by a metal plate 8 provided with a looped portion 9 defined by a curved fold to receive the projecting end of the anchor bolt the fold having a crosssection in the shape of the capital letter omega (#). The plate is provided with perforations 10 for receiving straps and wires and may have a U-section edge portion 11 with bores 12 to receive pegs for mounting a punched strip.
Patent GB-309006-A (GB)
Title: Improvements in apparatus for delivering measured quantities of liquid
IPC: B67D7/16
Filed: 1927-12-31
Abstract: 309,006. Shell-Mex, Ltd., and Lawson, J. Dec. 31,1927. F i x e d multiplechamber apparatus.- In apparatus for delivering measured quantities of liquid of the type in which a pair of containers are adapted alternately to be filled with liquid through changeover mechanism, such as a four-way valve, the air displaced from the container which is being filled being conducted to the container which is being emptied to accelerate the discharge of the liquid, escape of the air is prevented by fitting a syphon in the pipe connecting the overflow chamber to the reservoir. The chambers 11, 12 are connected up to a pump 1 through a four - way valve 5 means being provided, as described in Specification 297,698, for supplying through a pipe 19 additional air to the bridge chamber 14 connecting the tops of the containers. Excess liquid is carried off by the pipe 17 which delivers the same to a chamber 18 provided with a syphon comprising the concentric tubes 20, 21, providing a liquid seal except for such time as the syphon is operating. In a modification, the liquid seal is maintaned when the syphon breaks by the provision of a sliding tube co-operating with ports. Specifications 286,754, 287,268; 287,589 and 297,764, [both in Class 135,-Valves &c.], also are referred to.
Patent GB-453591-A (GB)
Title: Improvements relating to mercury vapour rectifiers
IPC: H02H7/127
Filed: 1934-12-10
Abstract: 453,591. Rectifying alternating current. AKT.-GES. BROWN, BOVERI, & CIE, Baden, Switzerland. Dec. 10, 1934, No. 35501. Void [Abridged as open to inspection tinder Sect. 91 of the Acts, June 11, 1935]. [Class 38 (ii)] In mercury-vapour rectifier installations in which grid control is provided for suppressing the arc under fault conditions, means are provided whereby blocking voltage is applied to the grids during ignition and while the excitation arc is being established. The means comprise a relay n the energizing winding of which is connected in the circuit of the exciter anodes d1, d2 and which is adapted to change over the connection of the grids to a D.C. source k in such manner that a positive voltage is substituted for a blocking voltage when the excitation arc is established.
Patent GB-895905-A (GB)
Title: Pneumatic control apparatus
IPC: G05D23/185
Filed: 1958-11-05
Abstract: 895,905. Fluid-pressure servomotor-control systems. GARRETT CORPORATION. Nov. 5, 1958 [Nov. 6, 1957], No. 35576/58. Class 135. Pneumatic control apparatus includes a pneumatic control pressure chamber 28 having a pressure-responsive wall 26 movable against a resilient force, inlet and outlet passages of which one, e.g. the inlet, is provided with a restricted orifice 31 whilst the other is controlled by a valve comprising two co-operating movable flow-controlling elements such as a valve member 26, connected to a thermostat 15, 16 and a valve seat 24, connected to the movable wall 26, so that the apparatus acts to maintain a control pressure in the chamber determined by the thermostat. As shown, the thermostat 15, 16 is positioned in a conduit 10 and the control pressure actuates a valve 14 controlling the flow of a medium in this conduit in accordance with its temperature. In an alternative embodiment, the inlet to the control pressure chamber is controlled by a valve comprising a piston-type closure member carried by the thermostat, which co-operates with a ported hollow sleeve carried by two spaced diaphragms of which one encloses the chamber.
Patent GB-1241544-A (GB)
Title: Improvements relating to gas-cushion load-supporting apparatus
Inventor: HART WILLIAM BARRIE
IPC: B60V3/04
Filed: 1967-08-03
Abstract: 1,241,544. Air-cushion vehicles. HOVERCRAFT DEVELOPMENT Ltd. 2 Aug., 1968 [3 Aug., 1967], No. 35684/67. Headings B7K and B7L. An air-cushion vehicle 1 supported and guided in operation over a prepared concrete track 2 by air cushions 5 of load-supporting pads 7 has means for varying the cushion containing property of the air curtains of pads 7 in response to increases of cushion pressure such as are caused by roll or heave of the vehicle. In Fig. 4, a curtain of one of the above pads is formed by air from nozzles 8, the width of the nozzles being variable in response to cushion pressure increases at 26; these increases act on pistons 23 in cylinders 24, and actuating rods 25 attached to pistons 23 move the outer portions 7 of nozzles 8 thereby varying the nozzle width and the curtain flow therethrough. The movable parts 7 are sealably connected to the vehicle by flexible seals 33 so as to enclose supply ducts 31 for nozzles 8. Springs 26 are provided to balance the cushion pressure forces on the pistons 23. The cylinders 24 are open to the atmosphere at 34. Another embodiment, Fig. 5, has a pad 7 with a centrally disposed base 41 whose flanged edge 42 defines with the rim 43 of the pad casing 40 a curtain nozzle 8. Springs 44 retain the base normally horizontal, but pressure increases in the cushion 5 cause deflections of the base 41 and locally change the width of nozzles 8, thereby increasing the curtain air flow through that part of the nozzle. In Fig. 6 a centrally disposed base 52 has a series of nozzle members 53 attached to its circumference by flexible seals 56, the nozzle members being pivoted by torsion shafts at 55 to brackets 54 welded to base 52 so that increases of cushion pressure operate on the lower faces 93 of members 53 to pivot the members about 55, thereby widening curtain nozzles 8 and increasing the curtain air flow. A variation of the embodiment of Fig. 6 has springs to bias the nozzle members to a given position in place of the torsion shafts, and the upper surfaces of the nozzle members are open to the atmosphere, Fig. 8 (not shown), the pad being separated from the vehicle body by a plenum chamber formed of the vehicle base, the upper surfaces of the pad, and a flexible membrane arranged so that motion of the pad towards the vehicle body is resisted. A further embodiment has pistons similar to those of Fig. 4, except that the shafts attached to the pistons operate curtain air supply valves instead of moving the nozzle walls to change the curtain air flow, Fig. 7 (not shown).
Patent GB-826763-A (GB)
Title: Improvements in and relating to the production of oxygenated hydrocarbons
Inventor: GODDARD REGINALD EDWIN
IPC: C07C45/50
Filed: 1956-11-23
Abstract: Aldehydes containing 4 to 6 carbon atoms and each containing the same number of carbon atoms are produced by the liquid phase catalytic carboxylation of alkene(s) having one less carbon atom than the desired product, preferably using a cobalt catalyst, separating the products as vapour in a hot gas/liquid separator and then as liquid in a cold gas/liquid separator and subjecting the liquid product to at least two distillations at a lower pressure to obtain separate streams of isomeric aldehydes.  In a first embodiment the crude aldehyde is flash distilled at the lower pressure, e.g. atmospheric, to obtain a mixture enriched in aldehydes overhead which is again distilled in a packed column to obtain n-aldehyde as bottoms and iso-aldehydes overhead preferably using a packed column.  The crude aldehyde is preferably passed through a decobalting step in which cobalt is precipitated and removed; the bottoms from the flash distillation are then preferably passed to the decobalter following the cold gas/liquid separator.  The second distillation is preferably carried out in the presence of water in an amount greater than that needed to produce the iso-aldehyde-water azeotrope, this azeotrope is then obtained overhead and aqueous n-aldehyde as bottoms.  The condensates are separated into aqueous layers which are returned as the main supply of water to the distillation and the organic layer is dried or distilled to take azeotrope overhead and dry aldehyde a bottoms, the overhead again being separated into an aqueous layer which is discarded and an aldehyde layer used as reflux.  The iso-aldehyde stream obtained if it contains more than one isomer may be further distilled to separate the isomers, water again being added if desired.  In a second embodiment the crude aldehyde is distilled in the presence of water to obtain iso-aldehyde azeotrops overhead and aqueous bottoms from which an organic layer is separated and distilled in a small column or flash distilled to obtain aqueous n-aldehyde or its azeotrope overhead.  The amount of water added in the aqueous distillation is preferably in a weight ratio to the organic compound between 1 : 1 and 1 : 25 using columns of 25-40 theoretical plates.  The heavy bottoms from the second column may be returned to the decobalter in the carbonylation process.  In a fourth variant the crude aldehyde is distilled to obtain an aldehyde mixture overhead which is distilled in the presence of water to obtain iso-aldehyde azeotrope overhead, and either n-aldehyde is removed as vapour from the boiler or a few plates above the bottom of the column or the bottoms are further distilled in the presence of more water if desired to obtain aqueous n-aldehyde.  Specifications 633,184, [Group IV (b)], 655,976, 678,211, 684,673, 684,958, 692,089, [all in Group IV (b)], 698,279, 701,434, 703,683, [both in Group IV (b)], 703,755, [Groups IV (a) and IV (b)], 704,942, 706,009, 721,272 and 738,161, [all in Group IV (b)], are referred to.
Patent GB-1344595-A (GB)
Title: Apparatus for the periodic interruption of the feed of hydrau lically controlled work slides
IPC: F15B11/12
Filed: 1972-08-01
Abstract: 1344595 Chip breaking process INDEXWERKE KG HAHN & TESSKY 1 Aug 1972 [5 Aug 1971] 35884/72 Heading B3T [Also in Division F1] The feed of a tool slide 28, 30, Fig. 2, is periodically interrupted to break up the chips, by a piston and cylinder 10, 12, to which pressure fluid is fed by slide valves I-IV. The feed rate of the slide is controlled by a throttle 34 and the frequency of interruption of the feed is controlled by a throttle 36 which regulates the flow to the slide valves. A screw 14 provides an adjustment of the stroke of piston 10. Valves I-TV move in a continuous sequence described with reference to Figs. 3-10 (not shown), the speed of movement being controlled by the throttle 36. This results in pressure fluid being alternately supplied to opposite sides of the piston 10. Whilst the piston 10 is moving the tool-slide is stationary and vice versa. A block 39, Fig. 1, houses valves I-IV and throttles 34, 36.
Patent GB-1105985-A (GB)
Title: A method of removing co2 and h2o from a gas stream
IPC: B01D53/14
Filed: 1966-08-10
Abstract: Carbon dioxide and water are removed from a gas stream by using three absorption filter elements whereby the first initially contains a packing of granular calcium hydroxide and the second and third contain a packing of calcium oxide, the method comprising passing the gas stream sequentially through the first and second filter elements whereby carbon dioxide is absorbed in the first filter forming calcium carbonate, and water is absorbed in the second filter forming calcium hydroxide.  The third element is disconnected throughout the above absorption and when the first filter element is exhausted it is disconnected and the second and third elements are connected so that the gas stream passes through them and the second filter now acts as a carbon dioxide absorption filter and the third element as a water absorption filter.  During this operation the first filter element is re-charged with fresh calcium oxide packing and held in reserve to act as a water absorption filter when the second filter element is exhausted and replaced as a carbon dioxide absorption filter by the third filter element.  As the carbon dioxide absorption filter becomes increasingly exhausted, the temperature of this filter is raised from 180 DEG  to 400 DEG  C. in stages of between 10 DEG  to 20 DEG  C. in order to increase the absorption capacity of this filter.
Patent GB-1009323-A (GB)
Title: Rocket motor with exhaust nozzle closure device
IPC: F02K9/97
Filed: 1963-09-12
Abstract: 1,009,323. Rocket nozzle closure. ATLANTIC RESEARCH CORPORATION. Sept. 12, 1963 [Sept. 20, 1962], No. 35922/63. Heading F3A. A closure device of resilient material has an enlarged forward portion abutting the inside surface of the convergent section of a rocket nozzle and is connected by a neck portion to an enlarged rear portion engaging the inside surface of the divergent section of the nozzle. A rocket motor 10 having a nozzle 20 with a convergent section 17, throat 18 and divergent section 19 is equipped with a closure device 21 comprising an enlarged resilient forward portion 22, neck 23 and conical rear portion 24. The forward portion 22 bears circumferentially against part of the inner surface of the convergent section 17 and contact is maintained by the rear portion 24 engaging the inside surface of the divergent section 19, the force being sufficient to make an air-tight contact between the nozzle and the forward portion 22. A resilient material is used for the forward portion 22 so that it can pass through the throat 23, while the rear portion 24 can either be produced from a single piece with the front or it can be a separate piece, rigid or resilient, and joined to the front portion in the region of the neck. On ignition of the rocket, combustion gas pressure forces the closure device out of the nozzle. By choice of material and dimensions, the device can be made to leave the nozzle at any desired pressure of the combustion gases, the performance being improved by lubricating the forward portion. Various materials are disclosed and embodiments show differently shaped devices some having recesses with rigid fitting inserts.